Astronomy and Astrophysics – Astronomy
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..15...93f&link_type=abstract
Advances in Space Research (ISSN 0273-1177), vol. 15, no. 5, p. (5)93-(5)94
Astronomy and Astrophysics
Astronomy
Albedo, Backscattering, Calorimeters, Cerenkov Counters, Diffuse Radiation, Gamma Ray Astronomy, Gamma Ray Telescopes, Gamma Rays, Scintillation Counters, Annihilation Reactions, Dark Matter, Gamma Ray Observatory, Primary Cosmic Rays, Spaceborne Astronomy
Scientific paper
Diffuse gamma radiation in the Galaxy has been measured with instruments onboard the COS-B and Compton Gamma Ray Observatory (CGRO) satellites from the tens of keV up to about 30 GeV. There is no experimental data at higher energies, but this data is very important for the spectrum of primary cosmic rays and the existence of neutralinos (hypothetical supersymmetrical particles which are supposed to constitute dark matter in the Galaxy and create gamma-quanta in the process of annihilation). The GAMMA-400 collaboration is working on the design of a telescope for gamma-ray measurements in the 10-1000 GeV range. The electronics of the GAMMA-400 eliminate some hindering effects, in particular the influence of backscattered gammas emitted by the very massive calorimeter (calorimeter albedo). The GAMMA-400 project may be realized in the near future if economic conditions in Russia are favorable.
Fradkin Moisei I.
Ginzburg Viktor L.
Gorchakov E. V.
Kaplin V. A.
Kurnosova Lidiya V.
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